Services and Applications’ infrastructure for agile optical networks More questions than answers Tal Lavian
Jul 29, 2015
Services and Applications’ infrastructure for agile optical
networks
More questions than answers
Tal Lavian
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Services and Applications’ infrastructure for agile optical networks ?
Huge advancements in optical devices, components and networking.
The underline of the Internet is optical – How can we take advantage of this?
How can the applications take advantage of this?
Agile Optical Network is starting to appear. What services and interfaces we’ll need between the optical control and the applications?
What are the applications?
The Internet architecture was built on some 15-20 years old assumptions. Are some modifications needed?
Is packet switching good for all? In some cases, is circuit switching better? (move TeraBytes of SAN date, P2P, Streaming)
End-to-End Argument – Is is valid for all cases?
What cases not? What instead?
The current Internet architecture is based on L3. What is needed in order to offer services in L1-L2?
Computation vs. Bandwidth 10X in 5 years
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How Optical Agility differ? (vs. L3 Routing)
Current internet architecture is based on L3 routers with static connection of routers ports (point to point)
Until recently it took 4-8 month to set an optical link coast to coast.
Need to cross and contract with 4-6 organization with lawyers
Need patch panel with manual cable setting
Need static configurations
Extremely expensive (10G Monthly - $1M)
current peering is mainly in L3, BGP and policy
New fast provisioning in ASON (seconds)
A head of time static rout computation
MPLS, MPS, CR-LDP, RSVP-TE
New Service Architecture and mechanisms
for composing services Manual connectivity
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Service Composition Current peering is mainly in L3. What can be done in L1-L2?
The appearance of optical Access, Metro, and Regional networks
L1-L2: Connectivity Service Composition
Across administrative domains
Across functionality domain (access, metro, regional, long-haul, under-see)
Across boundaries (management, trust, security, control, technologies)
Peering, Brokering, measurement, scalability
Appearance of standards UNI – NNI
Access
Provider A
Provider B
Trust C
Metro
Technology G
Provider F
Control E
Regional
Admin L
Trust T
Security S
Long Haul
latency P
Bandwidth Q
Resiliency R
Client
Server
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Compose new type of Applications? Dynamic L2VPN: enable new type of applications
Agile connectivity for:
SAN across metro, regional and long haul.
Plain disk remote storage
Backup (start remote backup when the tape in Nebraska is ready and when all the optical connection are ready to be set)
Set dynamic bandwidth connectivity to the Internet
What architecture changes are needed?
Optical Ring
Mirror Server
main Server
Route 1
Route 2
Route 3
ASON
ASON
ASON
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Fiber
BundleSingle
Fiber
Technology Composition L3 routing – drop packets as a mechanism
(10-3 lose look good)
Circuit switching – set the link a head of time
Optical networking – bit transmission reliability
(error 10-9 -10-12)
L3 delay – almost no delay in the optical layers
Routing protocols are slow – Optics in 50ms
Failure mechanism redundancy
DWDM s tradeoff- higher bandwidth vs. more s
For agile L1-L2 routing may need to compromise on bandwidth
RPR – break L3 geographical subnetting
Dumb Network - Smart Edge? Or opposite?
Fiber
DataNetworking
OpticalTransport
OpticalSwitching
Overlay Networks
SONET
OC-3 / 12 / 48 / 192
STS-NTDM
STS-NcEthernet
VT’sVT’sVT’s
VT’s
80M1M
1000M10M
300M500M
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New Architecture Challenges We are facing enormous growth of traffic. How the current L3
centric architecture handle this growth?
Supply - New technologies for the Last Mile Servers and storage are moved to Data Centers with big data pipes
Optical Ethernet, MEF, L2VPNs, Passive Optical Networks (PON)
Competition in the last mile, mainly business access
Demand – The need for more bandwidth Distribution of data, storage and computation.
Streaming, virtual gaming, video conferencing,
P2P, KaZaA, Morpheus - the next big thing that consume traffic?
Social differences, downloads of Gigabits a day
Dialup move to broadband
PCs on the edge become servers
OC-192DWDM n x l
T1DS1DS3
Ethernet LAN
LL/FR/ATM1-40Meg
OC-12OC-48IP/DATA
1GigE 10GigE+
CoreCoreCoreCoreMetro
1Gig+
Access
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Router
Router MEMs Switch
Prototype
Router
BSF
B2
B3
L7 Switch
Comp
Optical Gateway
Control Mesg
Comp
Comp
Comp
DARPA demo – Disaster Recovery conceptAgile setting of light-path on 10GE All Optical MEMs switch
Comp - Control and computation - Linux
L7 Switch
Comp
Comp
Optical Gateway
L7 Switch
Comp
1Gbs
10Gbs
Control Mesg
NY
FL
Backup Slides
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Networking Issues
End-to-End versus Hop-by-
Hop
Unicast versus Multicast
Centralized versus Distributed
Peer-to-Peer versus Client-Server
Connectivity versus Service.
Vertical versus Horizontal
Users versus Provides
Electrical versus Light
Copper versus Fiber
Wired versus Wireless
Packet versus Circuit
Flow versus Aggregate
Stateless versus stateful
Fixed versus Programmable
It is impossible to eliminate one completely in favor of the other!So, how are we composing the next generation Internet?
Service Architecture instead of Connectivity Architecture
Composing end-to-end services by negotiation
Deploying Optical Agility with Programmability and Scalability properties
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Packet vs. CircuitPacket Switch data-optimized
Ethernet TCP/IP
Network use LAN
Advantages Simple Low cost
Disadvantages unreliable
Circuit Switch
• Voice-oriented— SONET
— ATM
• Network uses— Metro and Core
• Advantages— Reliable
• Disadvantages— Complicate
— High cost
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Networking – Composing the Next Step ?
How are we composing the next Internet?
Elimination
Addition
Combination
Survival of the fittest
Composing the Internet = Choosing and combining components to construct services, at the same time optimizing some utility function (resources, monetary, etc)
Service Architecture
Optical Core
Programmability
Scalability
Composing by negotiation
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Impedance Mismatch
Cross boundaries (Control, Management, security)
Cross Technologies (Sonet, DWDM, ATM)
Cross topologies (P2P, Rings all types, mesh, )
Circlet , packets
Speeds (1.5, 10, 51, 100, 155, 622, 1G, 2.4G, 10G…)
Fiber, copper, wireless
Level of media security
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Switching Fabric
CPU System
Data Plane(Wire Speed Forwarding)
Control Plane ORE
Applications
Traffic Packets
Monitor status New rules
System Services
Openet Architecture
ForwardingProcessor
Forwarding
Rules
Statistics&Monitors
. . .ForwardingProcessor
Forwarding
Rules
Statistics&Monitors
ForwardingProcessor
Forwarding
Rules
Statistics&Monitors
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Scalable Bandwidth and Services
OC-3 / 12 / 48 / 192
STS-NTDM
STS-NcEthernet
VT’sVT’sVT’s
VT’s
80M
1M
1000M
10M
300M
500M